Nuisance calls are to be banned in part of Preston after the area was declared a No Cold Calling zone.
A number of streets in Fulwood are now covered by the scheme, following a campaign by community leaders.
One mum who was “charmed” into repairs, leaving her with a leaking roof and out of pocket, said she hoped the new initiative would stop other people falling victim to cold callers.
Angela Crossthwaite, 39, who lives in a Fulwood street outside of the current No Cold Calling Zone, hopes the scheme will be extended if it is successful.
She said: “I don’t think anybody should be bothered at home.
“If you need something doing, you’ll go and get somebody.
“You don’t need badgering for anything, it’s not fair.”
Trading Standards have now stepped in, following a campaign by local leaders.
Cadley councillor John Potter said: “This whole area, we’ve been campaigning to make into a No Cold Calling zone.
“We have a lot of elderly folk, and a lot of elderly folk who live on their own.
“We’ve had numerous reports of nuisance cold callers and sales people badgering residents here.” He said the team had worked alongside police and Trading Standards and contacted residents about the new scheme.
He said: “We didn’t want to see one more person getting scammed.”
The zone runs between Black Bull Lane and Garstang Road and includes Kings Drive, Westgate, Southgate, Regent Drive, Eastgate, Stratford Drive, Oxford Road, Berwick Drive, Dunbar Drive and Edgehill Drive.
Coun Potter said: “It’s a great thing to have a success like this.”
Paul Noone, head of Lancashire County Council Trading Standards service, said: “This area receives a high level of cold callers offering everything from property repairs, to garden services, to highly-priced household goods. “Reports from residents indicate that some of these sellers are untrustworthy and use high-pressure sales techniques to try to convince them that work is urgently needed, when in fact it may not be needed at all.
“Establishing No Cold Calling Areas is a way of discouraging cold-callers, and where traders persist in calling, knowing that they live in a No Cold Calling Area gives residents the confidence to say no.
“We held a consultation and the majority of people in this area supported introducing this scheme.
“Our advice is to never do business on your doorstep, and always say no to cold callers.
“Lancashire County Council’s Safe Trader Scheme can help you find a reputable trader.”